21295645

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{5113}}^1$

素因数の和:5149

約数の個数: 24

約数和(自身を含む): 31481784

約数和(自身を除く): 10186139

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 5113, 25565, 35791, 86921, 178955, 250537, 434605, 608447, 1252685, 3042235, 4259129, 21295645]

約数ペア:

[(1, 21295645), (5, 4259129), (7, 3042235), (17, 1252685), (35, 608447), (49, 434605), (85, 250537), (119, 178955), (245, 86921), (595, 35791), (833, 25565), (4165, 5113)]